//https://leetcode.cn/problems/group-anagrams/

class Solution {
public:
    vector<vector<string>> groupAnagrams(vector<string>& strs) {
        unordered_map<string, vector<string>> hash;
        for (auto s : strs)
        {
            string temp = s;
            sort(temp.begin(), temp.end());
            hash[temp].push_back(s);

        }

        vector<vector<string>> ret;
        for (auto& [x, y] : hash)
        {
            ret.push_back(y);
        }

        return ret;
    }
};